Composite brake-shoe.



PATENTBDIMAR. 12; 1902.;

D. 0. WARD. COMPOSITE BRAKE SHOE.

APPLICATION FILED JAN. 22, I908.

4 SHEETS-SHEET 1.

I PATBNTED MAB-.12, 1907. D. O. WARD. COMPOSITE BRAKE SHOE.

PPLIUATION mum J PATENTED MAR. 12, 1907.

4 sums-823m" 4.

UNITED STATES ATENT OFFICE.

DANIEL o.--wARD, or OAK PARK, ILLINOIS.

COMPOSITE BRAKE-SHOE.

. shoe is worn awayin service.

modified forms of the same.

The object'of'my invention is to produce brake-shoe of the class described which will 'combine the best braking and wearing qualities and the greatest strength for attachment to the brake-head and to resist breaking and falling in fragments upon the track when partly worn away in service.

To this end' my invention consists in the novel construction, arrangement, and combination of parts herein shown and described, and more particularly pointed out in the claims. i I In the accompanying drawings, wherein like or similar reference characters indicate like or corresponding parts, Figure 1 is an elevation of a brake-shoe back and inserts.

Fig. 2 is .a plan view of the same. Figs. 3, 4, 5, 6, and 8 to 26, inclusive, are plan views of tion taken substantially on line 7 7 of F ig. 1, showing part of a. finished brake-shoe.

, In this description and in the claims by inserts I desire tobe understood as meaning any portion positioned in the body of the shoe and \VlllCll will be inclosed within the shoe-body when the same is completed.

The 'brake-shoes in general use are at the present time usually made of a comparatively hard castiron to prolong the life of the shoe, and considerable loss is sustained by the railroads from breakage of these shoes, fromthe actual loss of the shoes, from accidents 'caused by the fragments lodging in or .upon frogs, switches, and'crossings, and from the fact that to avoid these losses all shoes are taken out of service and "consigned to the.

. serts i, projecting forward to the normal face Specification of Letters Patent? Fig. 7 is a secack plate 1 is provided of the Patented March 12,1907.

Application filed January 22 1906. Serial No. 297,306. i

of the shoe and adapted to be embedded in the body ofthe finished shoe. This back and the inserts are preferably formed integral and, to practically eliminate the risk of -breakage,-of some strong and tough material which used alone might be very undesirable forthe friction-face of a'l)rako-slioe.

As shown, a plurality of openings 5 5 are formed through each of the inserts 4: to secure the body portion -'of the shoe per1nanently in place. Also',tif desired, openings 6 6 may be provided in the back 1, so formed that the body portion of' the shoe may extend into the.openings and rigidly and positively lock the'body to" the back plate. The body portion of the shoe may consist of any. suitable material, preferably c'ast=iron, and is simply cast about theinserts and'upon the back, as shown in Fig. 7 ,by providing a suitable mold, placing the back plate and inserts in suitable position in the mold, and intro- .ducing the molten body material into the mold, thus forming practically a perfect fit between the body and back and inserts, which, if desired, may be tinned or otherwise treated to produce a more *perfectunion between the parts.

' In the forms shown in Figs. 2 and 45 the back plate 1 is extended forward at eaclrend of the shoe to the wearing-face, ,thus forming an inclosing wall 7 at the ends of the shoe;

but in no case do I desire to be understood as V contemplating such a wall at the sides of the shoe or of forming a continuous inclosure about the body portion of the shoe. Obviously, however, the above does not refer to an inclosure or a plurality of inclosures within the body of the shoe, as shown in-Figs. 5, 6, 11, 'or 16, or any other-form where a portion of the body material of the shoe is ositioned outside the inclosing walls, and w ereas various forms of my device are shown in the accompanying drawings I do not wish to be understood as limiting myself to the exact forms or construction herein shown.

a What I claim as new, and desire -to secure by Letters Patent, is

1. A brake-shoe, comprising a back plate without marginal inclosing PIOJGCiIlOIlS, provided with one or more projectlng inserts vided with one or more: projecting inserts upon its front side formed integral therewith,

in combination with a body positioned upon 1 said back arranged about and secured to said:

inserts, and means for securing said shoe in I position. 7

, 3. A brake-shoe, comprising a back plate without marginal i'nclosin'gprojections, provided with one or more projecting inserts upon its front side, each insert having aplu rality of transverse openings therethrough, in combination with ametal body positioned upon said back, arranged about said inserts and entering the openings therein, and means for securing said shoein position; 4. A brake-shoe, comprising a back plate without marginalinclosing projections, provided with a key-lug upon its'back formed integral therewith and one or more projectwith a keyway extension upon its back, promg inserts upon its front side, in combination with a body positioned uponsaidback, arranged about said inserts, and independently attached to said-back. andinserts.

5. A brake-shoe, comprising a metal back I plate without marginal projections provided jections upon its front side ex'tendingto the face of the shoe and formed inte ral with said back plate, in combination wit a'castiron body surrounding said projection. 4 j

' '6. A brake-shoe, comprising aback plate .yvithout marginal projections provided with one or .more inserts u on its front side formed integral therewit and extendingito the wearing-face of the. shoe,,in combination with a metal body positioned upon said back and arranged'about and securedto said in-.

serts, and position. I p v 7. A brake-shoe, comprising a back plate without marginal projections, one or more sheet or plate inserts mounted thereon formed integral therewith and extending to the wearing-face of the shoe, in combination means for securing said shoe in with a metal body positioned upon the back plate, arranged about theinserts and independently attached to said back plate and said inserts, and means for securing said shoe in position. i

. .8. A brake-shoe, comprising a back plate without marginal projections provided with openings, one or more inserts mounted upon its front side formed integral therewith a'nd,j-

extending to the wearingace of the-shoe, in combination with a metal bod positioned u on said back plate and inter ocking with t e openings therein, and arranged about and attached'to said inserts, and means for securing said shoe in position 9'. A brake-shoe, comprising a backplate rovided with a key-lug upon its back formedintegral therewith, one .or more sheet-or plate insertsrnounted thereon and extending to the wearing-face of the shoe, each insert having atransverse opening formed therein,

inserts, and means for securing said shoe in to the wearing-face-of the shoe, both the inin combination with a metal body positioned upon said back plate, arranged aboutandinterlockin g with said inserts, and means for securing said shoe in position. i v i). I A brake-shoe, comprising a back plate provided with openings, and. one or more .sheet or plate inserts mounted upon its frontside extending to the Wearing-face of said shoe, each insert havinga transverse opening vformed therein, in. combination with a metal body positioned upon said back plate, arran I w-ith ale openings in said back plate and sai position. 4 v

.11; Aibrake-shoe, comprising a back plate provided with'one-or more sheet or plate in}; serts formed integral therewith, extending to the Wearing-face of the shoe, both the in fserts and the back plate having openings formed therein, in combination with a metal ed about said insertsand interlockin body positionedupon the back plate and arranged about said inserts and interlockin with the openings," in said inserts-and sai back plate, and means for securing said shoe iin position. a I

12. A brake-shoe, comprising a back plate provided with one or more sheet or plate inserts formed integral therewith, extending serts and the back plate having openings formed therein,in combination with a metal body positionedvupo'n the back plate'and arranged about said inserts and interlocking with the openings in said inserts and said back plate and means upon the back plate for securing said shoe in position.

13. A brake-shoe back. of suitable form without marginal projections, provided with one or more inserts positioned upon its front side and adapted to extend to the wearingface of the shoe, and means formed integral. with said back for securing the finished shoe in position.

'14. Afbrake' -shoe backplate of suitable form, provided with one or more inserts form, provided with one or more inserts po-.

sitioned upon its front side each insert pro vided with transverse openings, and means upon said back plate for securing the'fin- 18 ed shoe in position.

-'17. A-'brake shoe back plate of suitable shoe, and means formed integral with said. vback plate forsecuring the finished shoe inposition.

form provided with Openings, one or more inserts mounted upon its front side and adapted to extend to the wearing-face of the 181 A brake-shoe back .plate of suitable form provided with one or more inserts upon its front side adapted to extend to the wearing-faoe of the shoe, both the inserts. and the back plate having openings formed therein,-

and means upon the back plate for securing with one or more projecting inserts upon its front side, interlocking means upon said inserts, and means formed integral with said back plate for securing the finished shoe in position.

21. A brake-shoe, comprisingla back. plate without marginal projections provided with one or more projecting inserts upon its front side, and a body positioned upon the back inclosin said inserts, in combination with interlocliing means between said' body and saidinserts and means formed integral with said back platefor securing said shoe in position.

22. A brake-shoe, comprising a back plate provided with inserts upon its front side projecting to thewearing-face of the shoe, and'a metalbody positioned upon the back plate 'inclosing said inserts, in combination with interlocking means between said body and the inserts and back plate, and means formed integral with said back plate for securing said shoe in position on a brake-head.-

23. A brake shoe, comprising a metal back plate without marginal projections provided with a keyway-extenslon upon its back. side, projections upon its front side extending toward theface of the shoe and formed integral with said back plate, in combination with a cast-metal body'surrounding. said pr'ojeotion.

In testimony whereof I have hereunto signed my name in the presence of two subscribing witnesses;

v DANIEL O. "WARD. Witnes'ses:

ROY W. HILL, CHARLES I. Conn. 

